Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta
Soils in the permafrost region have acted as car- bon sinks for thousands of years. As a result of global warming, permafrost soils are thawing and will potentially release greenhouse gases (GHGs) such as methane (CH4) and carbon dioxide (CO2). However, small-scale spatial heterogeneities of GHG pro...
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2023
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Online Access: | https://epic.awi.de/id/eprint/57792/ https://epic.awi.de/id/eprint/57792/1/Laurent_etal_2023_Biogeosci.pdf https://hdl.handle.net/10013/epic.d3ff2072-6dfa-44eb-b029-38d1d99f917b |
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ftawi:oai:epic.awi.de:57792 2024-05-19T07:43:40+00:00 Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta Laurent, Mélissa Fuchs, Matthias Herbst, Tanja Runge, Alexandra Liebner, Susanne Treat, Claire C 2023-06-06 application/pdf https://epic.awi.de/id/eprint/57792/ https://epic.awi.de/id/eprint/57792/1/Laurent_etal_2023_Biogeosci.pdf https://hdl.handle.net/10013/epic.d3ff2072-6dfa-44eb-b029-38d1d99f917b unknown Copernicus GmbH https://epic.awi.de/id/eprint/57792/1/Laurent_etal_2023_Biogeosci.pdf Laurent, M. , Fuchs, M. , Herbst, T. , Runge, A. , Liebner, S. and Treat, C. C. orcid:0000-0002-1225-8178 (2023) Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta , Biogeosciences, 20 (11), pp. 2049-2064 . doi:10.5194/bg-20-2049-2023 <https://doi.org/10.5194/bg-20-2049-2023> , hdl:10013/epic.d3ff2072-6dfa-44eb-b029-38d1d99f917b EPIC3Biogeosciences, Copernicus GmbH, 20(11), pp. 2049-2064, ISSN: 1726-4170 Article isiRev 2023 ftawi https://doi.org/10.5194/bg-20-2049-2023 2024-04-23T23:38:07Z Soils in the permafrost region have acted as car- bon sinks for thousands of years. As a result of global warming, permafrost soils are thawing and will potentially release greenhouse gases (GHGs) such as methane (CH4) and carbon dioxide (CO2). However, small-scale spatial heterogeneities of GHG production have been neglected in previous incubation studies. Here, we used an anaerobic incubation experiment to simulate permafrost thaw along a transect from upland Yedoma to the floodplain on Kurungnakh Island. Potential CO2 and CH4 production was measured during incubation of the active layer and permafrost soils at 4 and 20 ◦C, first for 60 d (approximate length of the growing season) and then continuing for 1 year. An assessment of methanogen abundance was performed in parallel for the first 60 d. Yedoma samples from upland and slope cores remained in a lag phase during the growing season simulation, while those located in the floodplain showed high production of CH4 (6.5 × 103 μg CH4-C g−1 C) and CO2 (6.9 × 103 μg CO2-C g−1 C) at 20 ◦C. The Yedoma samples from the permafrost layer started producing CH4 after 6 months of incubation. We conclude that landscape position is a key factor triggering CH4 production during the growing season time on Kurungnakh Island. Article in Journal/Newspaper lena delta permafrost Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Biogeosciences 20 11 2049 2064 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Soils in the permafrost region have acted as car- bon sinks for thousands of years. As a result of global warming, permafrost soils are thawing and will potentially release greenhouse gases (GHGs) such as methane (CH4) and carbon dioxide (CO2). However, small-scale spatial heterogeneities of GHG production have been neglected in previous incubation studies. Here, we used an anaerobic incubation experiment to simulate permafrost thaw along a transect from upland Yedoma to the floodplain on Kurungnakh Island. Potential CO2 and CH4 production was measured during incubation of the active layer and permafrost soils at 4 and 20 ◦C, first for 60 d (approximate length of the growing season) and then continuing for 1 year. An assessment of methanogen abundance was performed in parallel for the first 60 d. Yedoma samples from upland and slope cores remained in a lag phase during the growing season simulation, while those located in the floodplain showed high production of CH4 (6.5 × 103 μg CH4-C g−1 C) and CO2 (6.9 × 103 μg CO2-C g−1 C) at 20 ◦C. The Yedoma samples from the permafrost layer started producing CH4 after 6 months of incubation. We conclude that landscape position is a key factor triggering CH4 production during the growing season time on Kurungnakh Island. |
format |
Article in Journal/Newspaper |
author |
Laurent, Mélissa Fuchs, Matthias Herbst, Tanja Runge, Alexandra Liebner, Susanne Treat, Claire C |
spellingShingle |
Laurent, Mélissa Fuchs, Matthias Herbst, Tanja Runge, Alexandra Liebner, Susanne Treat, Claire C Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta |
author_facet |
Laurent, Mélissa Fuchs, Matthias Herbst, Tanja Runge, Alexandra Liebner, Susanne Treat, Claire C |
author_sort |
Laurent, Mélissa |
title |
Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta |
title_short |
Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta |
title_full |
Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta |
title_fullStr |
Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta |
title_full_unstemmed |
Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta |
title_sort |
relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the lena delta |
publisher |
Copernicus GmbH |
publishDate |
2023 |
url |
https://epic.awi.de/id/eprint/57792/ https://epic.awi.de/id/eprint/57792/1/Laurent_etal_2023_Biogeosci.pdf https://hdl.handle.net/10013/epic.d3ff2072-6dfa-44eb-b029-38d1d99f917b |
genre |
lena delta permafrost |
genre_facet |
lena delta permafrost |
op_source |
EPIC3Biogeosciences, Copernicus GmbH, 20(11), pp. 2049-2064, ISSN: 1726-4170 |
op_relation |
https://epic.awi.de/id/eprint/57792/1/Laurent_etal_2023_Biogeosci.pdf Laurent, M. , Fuchs, M. , Herbst, T. , Runge, A. , Liebner, S. and Treat, C. C. orcid:0000-0002-1225-8178 (2023) Relationships between greenhouse gas production and landscape position during short-term permafrost thaw under anaerobic conditions in the Lena Delta , Biogeosciences, 20 (11), pp. 2049-2064 . doi:10.5194/bg-20-2049-2023 <https://doi.org/10.5194/bg-20-2049-2023> , hdl:10013/epic.d3ff2072-6dfa-44eb-b029-38d1d99f917b |
op_doi |
https://doi.org/10.5194/bg-20-2049-2023 |
container_title |
Biogeosciences |
container_volume |
20 |
container_issue |
11 |
container_start_page |
2049 |
op_container_end_page |
2064 |
_version_ |
1799483412953694208 |